def subscribe_multi(self, podcasts):
"""Subscribe the user to multiple podcasts. podcasts should be an iterable of Podcast objects."""
not_already_subscribed = []
for podcast in podcasts:
if podcast.url not in self.subscriptions:
not_already_subscribed.append(podcast.url)
self.run(self.table.get(self.id).update(
{"subscriptions": r.row["subscriptions"].set_union(not_already_subscribed)}
))
Podcast.run(Podcast.get_table().get_all(r.args(not_already_subscribed)).update({
"subscribers": (r.row["subscribers"].default(0) + 1)
}))
return SubscribeResult(success=True)
def get_multi_by_url(cls, urls=[]):
"""Given a list of urls, returns a dictionary mapping from url to podcast."""
urls = set(urls)
d = {}
podcasts = [cls.from_dict(p) for p in cls.run(cls.get_table().get_all(r.args(urls)))]
for pod in podcasts:
urls.remove(pod.url)
d[pod.url] = pod
moved_podcasts = cls.run(
cls.get_table().filter(lambda pod: pod["previous_urls"].set_intersection(urls).count() > 0)
)
for pod in moved_podcasts:
for key in urls.intersection(pod["previous_urls"]):
d[key] = cls.from_dict(pod)
return d
def get_multi_by_url(cls, urls=[]):
"""Given a list of urls, returns a dictionary mapping from url to podcast."""
urls = set(urls)
d = {}
podcasts = [
cls.from_dict(p)
for p in cls.run(cls.get_table().get_all(r.args(urls)))
]
for pod in podcasts:
urls.remove(pod.url)
d[pod.url] = pod
moved_podcasts = cls.run(cls.get_table().filter(lambda pod: pod[
"previous_urls"].set_intersection(urls).count() > 0))
for pod in moved_podcasts:
for key in urls.intersection(pod["previous_urls"]):
d[key] = cls.from_dict(pod)
return d
def get_subscriptions(self):
"""Get the Podcast objects of podcasts the user has subscribed to."""
if len(self.subscriptions) == 0:
return []
res = self.run(Podcast.get_table().get_all(r.args(self.subscriptions)))
return [Podcast.from_dict(p) for p in res]
